A DISHWASHER WHEREIN OZONE WASH IS APPLIED

Description

[0001] The present invention relates to a dishwasher wherein ozone wash is applied according to the preamble of claim 1, such dishwasher being known from DE 10 2008 024 322 A1.

[0002] In dishwashers, ozone gas (O₃) having disinfectant and soil removal effects is used for increasing the effectiveness of the washing process. By means of the ozone gas used in the washing process, the detergent and water consumptions decrease and energy saving is provided since the washing process can be performed at lower temperature levels. In dishwashers performing ozone washing, the ozone gas generated by an ozone generator, is dissolved generally in the washing water and the washing process is performed by the ozonized water being sent onto the dishes. In the washing process performed with ozonized water, dissolvability of ozone effectively in the washing water affects the washing performance. There are state of the art studies performed in order to provide effective dissolving of the ozone in the washing liquid.

[0003] In the Patent Document No. DE3232057, an ozone generator is described that is used in washing machines and dishwashers. In the dishwasher, the ozone gas received from the ozone generator to the washing line by means of the vacuum pump is dissolved in the washing water in the rinsing step and the dishes are washed with ozonized water.

[0004] In the Patent Application No. EP1701644, the usage of oxygenating gases such as ozone in a dishwasher for the purpose of cleaning and disinfecting is described. The ozone gas is dissolved in the rinsing liquor and/or directly delivered to the washing container. Furthermore, the effectiveness of the ozone gas is increased by being mixed with cold fog generated by an ultrasonic generator.

[0005] In the Patent Application No. DE 3000826, ozone gas is used in the washing process in a dishwasher. The ozone gas generated by an ozone generator is mixed with water and the wash water comprising ozone gas is delivered into the compartment wherein the washing process is performed by means of a sprayer.

[0006] The aim of the present invention is the realization of a dishwasher wherein ozone wash is implemented and the dissolvability of ozone in the washing liquid is improved.

[0007] With the dishwasher realized in order to attain the aim of the present invention and explicated in the claims, the washing water - ozone gas mixture is provided to be directed into the washing tub after passing through the circulation pump by means of disposing the ozone generator in the suction line of the circulation pump and prior to the circulation pump. Thus, the amount of ozone gas dissolved in the washing water is increased by means of vortexes formed in the chamber of the circulation pump due to the effect of the motor.

[0008] The circulation pump is comprising a container, a suction port disposed on the container whereto the suction line is connected, a pumping port disposed on the container whereto the delivery line is connected and a variable speed motor disposed inside the container that directs the washing liquid sucked from the suction port to the pumping port, wherein a control unit controls the rotational speed of the variable speed motor so as to increase as to the level whereat ozone gas is sucked into the suction line.

[0009] The suction of the ozone gas generated in the ozone generator into water is provided with the vacuum effect created by the circulation pump. In order to strengthen this effect, the ozone generator is disposed at the same level or at a higher level than the circulation pump in the horizontal plane.

[0010] The connection hose extending between the ozone generator and the suction line is connected to a point at the upper side of the suction line. Thus, the connection hose does not remain below the upper level of the washing water flowing through the suction line at the point of connection and water is prevented from leaking into the connection hose.

[0011] In the present invention, the circulation pump comprises a variable speed motor. The rotational speed of the motor is regulated by the control unit and the amount of ozone gas sucked is changed.

[0012] In another embodiment of the present invention, the ozone generator is mounted on the suction line. In this embodiment, the suction line comprises a pipe-shaped support that does not change shape under force in order to support the weight of the ozone generator.

[0013] In the dishwasher of the present invention, by means of connecting the ozone generator to the suction line prior to the circulation pump, the ozone gas generated by the ozone generator is provided to be sucked with the vacuum effect created by the circulation pump, the dissolvability of ozone gas in the washing water is increased with the vortex effect of the motor since the washing water - ozone gas mixture flows through the circulation
pump.

[0014] The dishwasher realized in order to attain the aim of the present invention is illustrated in the attached figures, where:

Figure 1 - is the schematic view of a dishwasher wherein ozone washing is implemented.

Figure 2 - is the schematic detailed view of an ozone generator and a circulation pump.

Figure 3 - is the perspective view of an ozone generator and a circulation pump.

[0015] The elements illustrated in the figures are numbered as follows:

1. Dishwasher

2. Washing tub

3. Circulation pump

4. Suction line

5. Delivery line

6. Ozone generator

7. Connection hose

8. Container

9. Suction port

10. Pumping port

11. Motor

12. Body

13. Inlet

14. Outlet

15. Control unit

16. Support

17. First hose

18. Second hose

[0016] The dishwasher (1) comprises a washing tub (2) wherein the washing process is performed, a circulation pump (3) that provides circulation of the washing water, a suction line (4) arranged between the washing tub (2) and the circulation pump (3), a delivery line (5) providing the washing water to be transferred from the circulation pump (3) and an ozone generator (6) that generates the ozone gas used for increasing effectives of the washing process and for providing hygiene (Figure 1 and Figure 2).

[0017] The ozone generator (6) is connected prior to the circulation pump (3) in order to increase suction rate of ozone gas into water. Ozone gas is provided to be sucked by the circulation pump (3) by means of connecting the ozone generator (6) to the suction line (4) prior to the circulation pump (3).

[0018] The dishwasher (1) comprises a connection hose (7) with one end connected to the ozone generator (6), the other end to the suction line (4).

[0019] As the circulation pump (3) operates, the ozone gas generated by the ozone generator (6) mixes into the washing water with the vacuum effect created by the washing water that is sucked from the washing tub (2) and flowing in the suction line (4). The washing water mixed with the ozone gas in the suction line (4) is directed to the delivery line (5) by means of the circulation pump (3). The ozone gas dissolves in the circulation pump (3) with the vortex effect and thus the washing performance is increased.

[0020] The ozone generator (6) is positioned at the same level with the circulation pump (3) or at a higher level than the circulation pump (3) in order to facilitate the suction of ozone gas (Figure 3 and Figure 4).

[0021] The end of the connection hose (7) connected to the suction line (4) is connected to the upper side of the suction line (4) so as not to remain below the upper level of the washing water flowing through the suction line (4) at the point of connection. Consequently, the washing liquid is prevented from being directed from the suction line (4) to the ozone generator (6) when the ozone generator (6) is not operating.

[0022] The circulation pump (3) comprises a container (8), a suction port (9) disposed on the container (8) whereto the suction line (4) is connected, a pumping port (10) disposed on the container (8) whereto the delivery line (5) is connected and a motor (11) disposed inside the container (8) that directs the washing liquid sucked from the suction port (9) to the pumping port (10).

[0023] The ozone generator (6) comprises a body (12), an inlet (13) disposed on the body (12) wherefrom air is sucked from the outside and an outlet (14) disposed on the body (12) whereto the connection hose (7) is connected and wherefrom the ozone gas is sucked by the circulation pump (3).

[0024] The connection hose (7) is bent so as to from a siphon shape by means of its flexible configuration and thus the washing liquid in the suction line (4) is prevented to be directed from the suction line (4) to the ozone generator (6).

[0025] In the present invention, the motor (11) is of variable speed. The dishwasher (1) comprises a control unit (15). The rotational speed of the motor (11) and the operating range of the ozone generator (6) are controlled by the control unit (15). When the ozone generator (6) is operated, the motor (11) rotational speed is increased to the level whereat ozone gas is sucked into the suction line (4). The amount of ozone gas sucked from the ozone generator (6) to the suction line (4) by means of the connection hose (7) changes depending on the rotational speed of the motor (11) and operation duration of the ozone generator (6).

[0026] In another embodiment of the present invention, the suction line (4) comprises a pipe-shaped support (16), a first hose (17), one end connected to the washing tub (2), the other end to the inlet of the support (16) and a second hose (18), one end connected to the outlet of the support (16), the other end to the suction port (9). The ozone generator (6) is placed on the outer surface of the support (16). The possibility of the ozone generator (6) and the suction line (4) moving with respect to each other is eliminated by mounting the ozone generator (6) on the suction line (4). Consequently, the suction of the ozone gas is provided to be accomplished in a consistent manner. The support (16) while providing the washing liquid to be delivered by means of its pipe-shaped configuration also supports the ozone generator (6) due to its rigid structure.

[0027] In another embodiment of the present invention, the distance between the suction port (9) and the point where the connection hose (7) is connected on the suction line (4) is between 50 mm and 100 mm. When the distance between the point where the connection hose (7) is connected on the suction line (4) and the suction port (9) is decreased, vacuum effect is created at the inlet (13) with the vacuum effect created by operation of the
motor (11) when the ozone generator (6) is not in operation, the outside air sucked from the inlet (13) reaches the suction line (4) by means of the connection hose (7) and decreases operational efficiency of the circulation pump (3). When the distance between the point where the connection hose (7) is connected on the suction line (4) and the suction port (9) is increased, the efficiency of ozone gas suction from the ozone generator (6) decreases. Suction of ozone gas is provided by changing the rotational speed of the variable speed motor (11) to be between 2800 rpm and 3400 rpm.

[0028] With the present invention, by means of connecting the ozone generator (6) to the suction line (4) prior to the circulation pump (3) in dishwashers (1), the ozone gas generated by the ozone generator (6) is provided to be sucked through the connection hose (7) with the vacuum effect created by the circulation pump (3), the dissolvability of ozone gas in the washing liquid is increased with the vortex effect of the motor (11) since the washing water - ozone gas mixture flows through the circulation pump (3).

[0029] It is to be understood that the present invention is not limited to the embodiments disclosed above and a person skilled in the art can easily introduce different embodiments. These different embodiments should also be considered within the scope of the claims of the present invention.

Claims

1. A dishwasher (1) comprising a washing tub (2) wherein the washing process is performed, a circulation pump (3) that provides circulation of the washing water, a suction line (4) arranged between the washing tub (2) and the circulation pump (3), a delivery line (5) providing the washing water to be transferred from the circulation pump (3) and an ozone generator (6) that generates the ozone gas used for increasing effectives of the washing process and for providing hygiene, wherein the ozone generator (6) is connected prior to the circulation pump (3), characterized in that the circulation pump (3) comprises a container (8), a suction port (9) disposed on the container (8) whereto the suction line (4) is connected, a pumping port (10) disposed on the container (8) whereto the delivery line (5) is connected and a variable speed motor (11) disposed inside the container (8) that directs the washing liquid sucked from the suction port (9) to the pumping port (10), and in that the dishwasher (1) further comprises a control unit (15) that controls the rotational speed of the variable speed motor (11) so as to increase to the level whereat ozone gas is sucked into the suction line (4).

2. A dishwasher (1) as in Claim 1, characterized by a connection hose (7), one end connected to the ozone generator (6), the other end to the suction line (4).

3. A dishwasher (1) as in Claim 1 or 2, characterized by the ozone generator (6) that is positioned at the same level with the circulation pump (3) or at a higher level than the circulation pump (3).

4. A dishwasher (1) as in Claim 2 or 3, characterized by the connection hose (7) the end of which connected to the suction line (4) is connected to the upper side of the suction line (4).

5. A dishwasher (1) as in any one of the Claims 1 to 4, characterized by the ozone generator (6) comprising a body (12), an inlet (13) disposed on the body (12) wherefrom air is sucked from the outside and an outlet (14) disposed on the body (12) whereto the connection hose (7) is connected and wherefrom the ozone gas is sucked by the circulation pump (3).

6. A dishwasher (1) as in any one of the above Claims, characterized by the suction line (4) comprising a pipe-shaped support (16), a first hose (17), one end connected to the washing tub (2), the other end to the inlet of the support (16) and a second hose (18), one end connected to the outlet of the support (16), the other end to the suction port (9) and the ozone generator (6) mounted on the outer surface of the support (16).

7. A dishwasher (1) as in any one of the Claims 1 to 6, characterized by the flexibly configured connection hose (7) that is at least partially bent in siphon shape.

Ansprüche

1. Eine Geschirrspülmaschine (1) besitzt eine Waschwanne (2), in der der Waschvorgang durchgeführt wird, eine Umwälzpumpe (3) für das Umwälzen des Waschvorgang, eine Saugleitung (4), die zwischen der Wanner (2) und dem Umwälzpumpe (3) angeordnet ist, eine Förderleitung (5), die das Waschwasser bereitstellt, um von der Umwälzpumpe (3) gefördert zu werden, einen Ozongenerator (6), der das Ozongas erzeugt, welches das Ozongas erzeugt, das für die Steigerung der Wirksamkeit des Waschvorgangs und für die Bereitstellung von Hygiene verwendet wird, wobei der Ozongenerator (6) vor der Umwälzpumpe (3) geschaltet ist; gekennzeichnet ist es dadurch, dass die Umwälzpumpe (3) einen Behälter (8) und einen daran angeordneten Ansauganschluss (9) besitzt, an den die Absaugung erfolgt und es an die Saugleitung (4) angeschlossen ist; eine Pumpöffnung (10), die an dem Behälter (8) angeordnet ist, durch der die Förderleitung (5) verbunden ist, ein Motor (11) mit einer variablen Geschwindigkeit, der innerhalb des Behälters (8) angeordnet ist und die angesaugte Waschflüssigkeit von der Ansaugeöffnung (9) zu der Pumpöffnung (10) leitet, weiterhin gekennzeichnet dadurch, dass die Geschirrspülmaschine (1) eine Steuereinheit (15) umfasst, die die Drehzahl des Motors (11) mit variable Geschwindigkeit so steuert, dass sie auf den Pegel ansteigt, be idem das Ozongas in die Saugleitung (4) gesagt wird.

2. Eine Geschirrspülmaschine (1), wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass sein Verbindungsschlauch (7), dessen eines Ende mit dem Ozongenerator (6) verbunden ist und dessen anderes Ende mit der Saugleitung (4) verbunden ist.

3. Eine Geschirrspülmaschine (1), wie in Anspruch 1 oder 2 aufgeführt, ist dadurch gekennzeichnet, dass der Ozongenerator (6) auf gleicher Höhe oder höher wie die Umwälzpumpe (3) angeordnet ist.

4. Eine Geschirrspülmaschine (1), wie in Anspruch 2 oder 3 aufgeführt, ist dadurch gekennzeichnet, dass der Verbindungsschlauch (7), an dessen Ende die Saugleitung (4) angeschlossen ist, mit der oberen Seite der Saugleitung (4) verbunden ist.

5. Eine Geschirrspülmaschine (1), wie in Anspruch 1 bis 4 aufgeführt, ist dadurch gekennzeichnet, dass der Ozongenerator (6) einen Körper (12) und einen Zufuhr (13) besitzt, der an dem Körper (12) angeordnet ist, von dem Luft von außen her angesaugt wird und einen Ausfuhr (14), der an dem Körper (12) angeordnet ist, mit dem der Verbindungsschlauch (7) verbunden ist und von dem das Ozongas aus der Umwälzpumpe (3) angesaugt wird.

6. Eine Geschirrspülmaschine (1), wie in den oben aufgeführten Ansprüchen, ist dadurch gekennzeichnet, dass die Saugleitung (4) eine rohrförmige Halterung (16) und einen Schlauch (17) besitzt, dessen eines Ende mit der Waschwanne (2) und das andere Ende mit dem Einlass des Trägers (16) verbunden ist; und einem zweiten Schlauch (18), wobei ein Ende mit dem Auslass des Trägers und das andere Ende mit der Ansaugeöffnung (9) verbunden ist und an dem Ozongenerator (6) und an der äußeren Oberfläche des Trägers (16) montiert ist.

7. Eine Geschirrspülmaschine (1), wie in Anspruch 1 bis 6 aufgeführt, ist durch den flexible konfigurierten Verbindungsschlauch (7), der teilweise in Siphonform gebogen ist, gekennzeichnet.

Revendications

1. Un lave-vaisselle (1) comprenant une cuve de lavage (2) dans laquelle le processus de lavage est effectué, une pompe de circulation (3) qui assure la circulation de l'eau de lavage, une conduite d'aspiration (4) disposée entre la cuve de lavage (2) et la pompe de circulation (3), une conduite de refoulement (5) fournissant l'eau de lavage à transférer depuis la pompe de circulation (3) et un générateur d'ozone (6) qui génère l'ozone gazeux utilisé pour augmenter l'efficacité du processus de lavage et pour assurer l'hygiène, le générateur d'ozone (6) étant connecté avant la pompe de circulation (3), est caractérisé en ce que la pompe de circulation (3) comprend un récipient (8), un orifice d'aspiration (9) disposé sur le récipient (8) auquel la conduite d'aspiration (4) est raccordée, un orifice de pompage (10) disposé sur le récipient (8) auquel la conduite de refoulement (5) est raccordée et un moteur à vitesse variable (11) disposé à l'intérieur du récipient (8) qui dirige le liquide de lavage aspiré de l'orifice d'aspiration (9) à l'orifice de pompage (10), et en ce que le lave-vaisselle (1) comprend en outre une unité de commande (15) qui commande la vitesse de rotation du moteur à vitesse variable (11) de manière à augmenter jusqu'au niveau auquel le gaz ozone est aspiré dans la conduite d'aspiration (4).

2. Un lave-vaisselle (1) selon la déclaration 1, est caractérisé en ce qu'il comporte un tuyau de raccordement (7), une extrémité étant reliée au générateur d'ozone (6) et l'autre extrémité à la conduite d'aspiration (4).

3. Un lave-vaisselle (1) selon la déclaration 1 ou 2, est caractérisé en ce que le générateur d'ozone (6) est placé au même niveau que la pompe de circulation (3) ou à un niveau plus élevé que la pompe de circulation (3).

4. Un lave-vaisselle (1) selon la déclaration 2 ou 3, est caractérisé en ce que le tuyau de raccordement (7) dont l'extrémité reliée à la conduite d'aspiration (4) est relié au côté supérieur de la conduite d'aspiration (4).

5. Un lave-vaisselle (1) comme dans l'une quelconque des déclarations 1 à 4, est caractérisé en ce que le générateur d'ozone (6) comprend un corps (12), une entrée (13) disposée sur le corps (12) de laquelle l'air est aspiré de l'extérieur et une sortie (14) disposée sur le corps (12) à laquelle le tuyau de raccordement (7) est connecté et dont le gaz ozone est aspiré par la pompe de circulation (3).

6. Un lave-vaisselle (1) comme dans l'une quelconque des déclarations ci-dessus, est caractérisé en ce que la conduite d'aspiration (4) comprend un support en forme de tube (16), un premier tuyau (17), une extrémité reliée à la cuve de lavage (2), l'autre extrémité à l'entrée du support (16) et un second tuyau (18), une extrémité reliée à la sortie du support (16), l'autre extrémité à l'orifice d'aspiration (9) et le générateur d'ozone (6) monté sur la face extérieure du support (16).

7. Un lave-vaisselle (1) comme dans l'une quelconque des déclarations 1 à 6, est caractérisé en ce que le tuyau de raccordement (7) est flexible et est au moins partiellement courbé en forme de siphon.

Drawing